I quite like it actually! It's basically OS3.9 on steroids. 4.0 was fine, but the compositing in 4.1 is excellent, and even though it's quite superficial, it makes it feel that bit more modern. AmigaInput lets you use USB controllers for games, including older games which use lowlevel.library. Pretty much any older software I've wanted to run has worked just fine, and the version of E-UAE is there for those apps which hit the hardware or do illegal things. These, and various other small things like them make it overall a nice experience.
